# 导入模块
import time

# 开始计时
star_time = time.time()
print("开始时间是:",star_time)

# 初始化列表
alist = [88, 75, 72, 82, 90, 85, 78, 91]
n = len(alist)

# 主程序
for i in range (0,n-1):
    for j in range(0,n-2):
        if alist[j] > alist[j+1]:
            alist[j], alist[j+1] = alist[j+1],alist[j]

# 输出结果
print(alist)

# 结束计时
end_time = time.time()
print("结束时间是:",end_time)

# 总耗时计算
print("耗时是:",(end_time - star_time))